US525776A - Weight - Google Patents

Description

{No Model.)

W W WAINWRIGHT PAGKING'BOX FOB ROTARY Mowmzsp No. 525.776. Patented Sept. 11', 1894.

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M M a W Attorney UNITED STATES PATENT OFFICE.-

WILLIAM W. WAINWRIGHT, OF CONNERSVILLE, INDIANA, ASSIGNOR TO P. H. & F. M. ROOTS 00., OF SAME PLACE.

PACKING-BOX FOR ROTARY BLOWERS.

SPECIFICATION forming part of Letters Patent No. 525,? '76, dated September 11, 1894.

Application filed April 30, 1894. Serial No. 509,449. (No model.)

To all whom it may concern.- I

Be it known that I, WILLIAM W. WAIN- wRIGHT, of Connersville, Fayette county, Indiana, have invented certain new and useful Improvements in Packing-Boxes for Rotary Elowers, of which the following is a specifica- 10H. In rotary blowers the shafts of the rotary lmpellers project out through the heads of the casings and their projecting portions are .provided with suitable bearings and driving gears. When such blowers are used for certain purposes it is important that there should be no leakage where the shaft procctsout of the casing, and it is with the packing glands used at these points that my present invention has to do.

My improvements will be readily understood from the following description taken in connection with the accompanying drawings, 111 which-- Figure 1, is a side elevation, part vertical section, of the casing-head, bearing and stuffing box of a rotary blower, the construction showlng my present invention; Fig. 2, a side elevation of one of the packing screws, part vertical section; and Fig. 3, a face view of the parts shown in Fig. 1, viewed from the left-hand of Fig. 1, parts being in vertical section.

In the drawings2-A, indicates the usual casing-head of a rotary blower; B, one of the bearings connected therewith, the bearing in this instance being shown as provided with an adjustable box; 0, the shaft; D, the stuffing-box or packing cavity around the shaft; where the shaft passes outward through the casing head, this stufling-box opening outwardly toward the j ournal-bearing; E, a space or recess between the stufling-box and the inner end of the journal-box to permit of the presence of the gland and to permit the insertion of the packing; F, the packing-gland fitting the shaft and the stuffing-box and split diametrically so as to be in two pieces,

the length of the gland being substantiallyequal to the width of the space E; G, the lugs upon the packing-gland for the packingscrews, these lugs being so disposed that the out which separates a gland into two half pieces passes through these lugs and cenupon the journal-box in line with the holes in the lugs of the gland, the lugs H being tapped for the packing-screws; J, the packing-screws, threaded into the lugs H and presenting their heads against the lugs G of the gland; K, annular bosses projecting from the face of the lugs G, around the holes therein, these bosses seating in recesses in the faces of the heads of the packing-screws J; and L, portions of the screws J projecting inwardly beyond the heads thereof and through the holes in the lugs of the glands.

By turning up the screws J the glandwill be forced in compressively upon the packing. By turning back the screws J the gland F may be withdrawn, and by turning the screws back till the recesses in their heads are free from the bosses K the gland may be entirely removed, it then being in two disunited halves, the recesses in the heads of the screws engaging the bosses K holding the two halves together when the gland is in place. The gland may thus be readily removed to permit access'to the stuffing-box to insert the packing. In rotary blowers it is of high impdrtance that the journal-bearing be kept up as close as practicable to the casing-head and this requirement interferes with the practicability of finding room to withdraw the gland a proper distance from the stufiing-box to permit the proper insertion of packing. The present arrangement permits the journal-box to be carried up very close to the stuflingbox. The projecting portion L of the packing screws, and the holes in the lugs G for those projecting portions, are not absolutely necessary as the recesses engaging the bosses will unite the two halves of the gland and properly apply the pressure to the gland, but the projecting portion L will be found a contrally through the holes in the lugs; H, lugs venience in steering the parts to proper position. So far as merely forcing the gland into the stufiing-box is concerned, the studs ordinarily employed with nuts upon them would of course be the equivalent of the through lugs rigidly supported in front of the gland, is of special advantage in permitting freedom of access to the stufiing-box when the gland is out and away, as the screws do not then cross the recess E to interfere with access to the stulfing-box.

I claim as my invention- 1. The combination, substantially as set forth, of a stuffing-box, a gland therefor provided with lugs having facial bosses and split dlametrically through the bore of the gland and through said bosses, and screws arranged to force the gland into the stuffing-box and having recesses engaging around said bosses and holding the two halves of the gland together.

2. The combination, substantially as set forth, of a stnfiing-box, a packing-gland therefor provided with lugs G, having facial bosses and split diametrically through the bore of the gland and through said bosses, threaded lugs as H rigidly supported in front of the gland and in line with said bosses, and screws threaded through said threaded lugs and having heads with recesses surrounding said bosses and holding the two halves of the gland together;

3. The combination, substantially as set forth, of a casing-head for a rotary-blower, a

stufiing-box formed therein, a shaft through 30 with facial bosses and split diametrically 35 through the bore of the gland and through said bosses, and screws arranged to force the gland into the stuffing-box and provided with recesses surrounding said bosses and holding the two halves of the gland together.

4. The combination, substantially as set ,forth, of a casing-head for a rotary-blower, a

stuffing-box formed therein, a shaft through said stuffing-box, a journal-bearing for said shaft disposed in front of and a distance away from the open end of said stuffing-box, a packingland in said stufling-box provided with facial bosses and split diametrically through the bore of the gland and through said bosses, and screws engaging said journal-box and provided upon their inner ends with recessed heads surrounding said bosses and holding the two halves of the gland together. a,

WILLIAM W. WAINWRIGHT. Witnesses:

GEO. H. FULLERTON, J a, LOU R. CoNNER.

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